Best Laundry Detergents

We took 74 formulas — 49 liquids, 19 powders, and six single-use tabs — for a spin to see how well they removed 20 common stains (oil, coffee, mascara...) from polyester and cotton. Surprise: Powders packed the most power. For even better results on laundry day, be sure to check out our top washers. Unless noted, package size for powders is 48 to 56 ounces; for liquids, 50 to 64 ounces. Cost per load is based on our large, heavily soiled test load.